A Smartphones, tablets, e-readers, netbooks and laptops.
B Smartphones and laptops.
C Smartphones, tablets, e-readers and laptops.
D Smartphones, e-books and laptops.
A They are light and convenient.
B They are light, portable and convenient.
C They are portable and convenient.
D They are light and portable.
A They help students understand the materials better.
B They motivate students to study harder.
C Both A and B
D They disappoint students.
A It takes students a few minutes to access knowledge and information.
B Students spend hours surfing the Internet.
C Students can get rid of heavy backpacks.
D It takes students a few seconds to access knowledge and information.
A Their decision will help broaden students’ learning opportunities.
B Students will have more free time.
C Students will play more games.
D Their decision will eliminate students' learning opportunities.
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